c. Lessee shall fail to perform or observe any other covenant, condition or agreement to be performed or
observed by it with respect to this Lease and such failure shall continue unremedied for thirty (30) days after the date on which such performance was due; or 

 d. Lessee shall fail to maintain the engines in accordance with the engine manufacturers maintenance program and provide monthly reports and proof that the engines have been maintained in accordance with the
requirements and recommendations of the engine manufacturer; or 

 e. Any material representation or warranty made by Lessee herein shall
prove at any time to have been untrue or misleading in any material respect as of the time when made and such incorrectness shall continue to be material and unremedied for a period of thirty (30) days after written notice thereof by Lessor; or


 f. The entry of a decree or order for relief by a court having jurisdiction in respect of Lessee, adjudging Lessee a bankrupt or
insolvent, or approving as properly filed a petition seeking a reorganization, arrangement, adjustment, or composition of or in respect of Lessee in an involuntary proceeding or case under the federal bankruptcy laws, as now or hereafter constituted
or any other applicable federal or state bankruptcy, insolvency or other similar law, or appointing a receiver, liquidator, assignee, custodian, trustee, or sequestrator (or other similar official) of Lessee or of any substantial part of its
property, or ordering the winding up or liquidation of its affairs, and the continuance of any such decree or order unstayed and in effect for a period of ninety (90) days; or